Figure 3. PET-MRI fusion images of the head and neck, induced by left lateral excursion. Left upper and lower images are frontal and sagittal images in one subject (subject C: see Table). Red lines (A-F) show the levels of transverse scans shown in the center and right images. TM = temporal muscles, LP = lateral pterygoid muscles, MP = medial pterygoid muscles, MM = masseter muscles, SLG = sublingual glands.